Stream of Knowledge

Day 8 — AFI/SAFI and BGP Address Families: How One Protocol Carries Different Kinds of Reachability

By Haider Raza September 02, 2026

Learning objective Explain how AFI/SAFI pairs identify BGP address families, distinguish capability negotiation from Cisco address-family a...

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IELTS Writing Task 2: 5 Essay Templates That Cover 90% of Question Types (Band 8.0 Framework, Not a Shortcut)

By Haider Raza September 01, 2026

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Day 7 — Inside a BGP UPDATE: Withdrawn Routes, Path Attributes and IPv4 NLRI

By Haider Raza September 01, 2026

Learning objective Decode the logical sections of a base IPv4-unicast BGP UPDATE, explain how IPv4 NLRI represents prefixes, and distinguis...

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Day 6 — BGP Message Types: OPEN, UPDATE, KEEPALIVE, NOTIFICATION and ROUTE-REFRESH

By Haider Raza August 31, 2026

Learning objective Identify the purpose of each major BGP message, relate messages to the FSM and routing lifecycle, and use counters/captu...

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Day 5 — BGP Finite-State Machine: States, Transitions and Session Troubleshooting

By Haider Raza August 30, 2026

Learning objective Use the BGP finite-state machine as a troubleshooting model: identify what a current state proves, what it does not prov...

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Day 8 — AFI/SAFI and BGP Address Families: How One Protocol Carries Different Kinds of Reachability

IELTS Writing Task 2: 5 Essay Templates That Cover 90% of Question Types (Band 8.0 Framework, Not a Shortcut)

Day 7 — Inside a BGP UPDATE: Withdrawn Routes, Path Attributes and IPv4 NLRI

Day 6 — BGP Message Types: OPEN, UPDATE, KEEPALIVE, NOTIFICATION and ROUTE-REFRESH

Day 5 — BGP Finite-State Machine: States, Transitions and Session Troubleshooting

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